Math
Percentage Calculator
Solve any percentage problem — percent of a number, what percent, and percent change.
Pick the type of percentage question you have and fill in the two known values.
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Formula
Percent of
result = (X / 100) × YWhat percent
result = (X / Y) × 100Percent change
result = (Y − X) / |X| × 100Frequently asked questions
How do I find a percentage increase?
Use the "percentage change" mode with the original value as X and the new value as Y. A positive result is an increase.